noun🔗Share潮痕，潮汐印记。 A line (of seaweed or differently coloured sand etc) on the shore showing the level of high or low tide"After the storm, a dark tidemark of seaweed showed how high the waves had reached on the beach. "暴风雨过后，海滩上留下了一道深色的海藻潮痕，显示出海浪曾经到达的高度。environmentgeographygeologynatureoceannauticalplaceweatherChat with AIVocabulary GamePractice Reading
noun🔗Share痕迹，遗迹 (by extension) any mark showing the limit of some past activity"The stack of unread emails on my boss's desk formed a clear tidemark of how busy he'd been last week. "老板桌子上堆积如山的未读邮件，清晰地展现了他上周有多忙的痕迹。markpasthistoryChat with AIVocabulary GamePractice Reading
noun🔗Share水痕，污痕. A line of scum left on a bath tub when the water is drained away"After my long bath, a dirty tidemark was left around the tub. "我泡了个长时间的澡，放水后浴缸壁上留下了一圈脏脏的水痕.appearanceutilityenvironmentmarkChat with AIVocabulary GamePractice Reading
